Victoria Police are investigating an incident where steel stakes were discovered at Kilmore's racing track just hours before a scheduled racing event.
A routine inspection ahead of the race meeting saw two steel stakes uncovered on the track, hours before Thursday's event was set to take place.
It resulted in the entire meeting being abandoned.
Kilmore Racing Club chief executive Ben Murphy said everyone involved was "angry".
"We are not angry with the decision that has been made as we completely understand the need to look after the animal and the riders," he told racing.com.
"What we are angry and perturbed by is that someone has taken the time to come out and do what they have done to the track, to do what we can only assume is, to create chaos.
"That leaves a really bitter taste in our mouths."
Victoria Police confirmed on Thursday the incident was under investigation.
"Police are investigating following an incident at a race track on East Street, Kilmore today," the statement read.
"It’s understood a number of metal spikes were placed on the track.
"No people or animals were injured during the incident.
"Anyone with information is urged to contact Crime Stoppers 1800 333 000."